U.S. antitrust officials OK Yahoo's Zimbra deal

WASHINGTON (Reuters) - U.S. antitrust officials have approved Yahoo's purchase of e-mail software maker Zimbra for $350 million, the Federal Trade Commission announced on Monday.

Antitrust authorities took a preliminary look at the deal and said it posed no antitrust concerns, the FTC said in a statement.

Zimbra makes Web-based mail and calendar software that competes directly with products from Microsoft Corp and Google Inc.

Zimbra will help Yahoo enhance its decade-old e-mail service, the world's largest consumer service with 250 million accounts.